Library
Full books, textbooks, and PDFs — free to read and legal to download. Every link opens in a new tab.
Textbooks
OpenStax
Peer-reviewed textbooks for high school and college: math, science, history, economics. Free PDFs.
LibreTexts
Huge open textbook library across chemistry, biology, physics, math, and more.
Open Textbook Library
Hundreds of openly licensed textbooks, reviewed by faculty.
CK-12
K–12 textbooks and practice across math and science.
Wikibooks
Community-written textbooks and how-tos on almost anything.
MIT OpenCourseWare
Lecture notes, readings, and problem sets from real MIT courses.
Classics & Novels
Project Gutenberg
70,000+ public-domain books. Shakespeare, Austen, Dickens, Twain — in EPUB, Kindle, and plain text.
Standard Ebooks
Public-domain classics, carefully cleaned up and beautifully formatted.
Open Library
Borrow digital copies of millions of books with a free account.
Library of Congress
Free-to-use books, historical documents, and primary sources.
PDFs & Archives
Internet Archive — Texts
Millions of scanned books, magazines, and papers, many downloadable as PDF.
Directory of Open Access Books
Academic books released free by their publishers.
Feedbooks Public Domain
Classic fiction and non-fiction ready for e-readers.
HathiTrust
Digitized collections from research libraries; public-domain titles are fully readable.
Everything here is public domain, openly licensed, or offered free by its publisher. Know a good one we're missing? Tell us.